Ok, so the regulator on my Sears 16/6 with the OH160 was shot I believe when I got the tractor. Never was a problem as with the SSI system, I only used it for starting tractor then throw on charger at end of the day.
Fast forward to last summer when I went through 2 SSI modules in 1 month, then converted over to a battery/coil auto style ignition. My buddy who designed the ignition determined the regulator was bad, let me borrow a 15 amp from Kohler Command 22 hp, my original was 20 amp. So I found another replacement Kohler one so he could get his back, worked fine until recently. I was using tractor with the winch bucket and I ended up shutting down motor as winch wore out battery,no charging, Amp meter showed a big fat goose egg for charging duties, I determined regulator is fried. I think winch and motor were pulling the max 15 amps or maybe more and fried it. I do have an GM alternator on it, but just found out it the last couple days it was wired wrong and not charging, that is now fixed.
So I say all that to ge to this point. I have a later model regulator that bolts into flywheel cover, I installed it tonight and it appears to be charging or at least doing something,
Here's my breakdown
* at roughly 1000-1500 rpms it shows on amp gauge about 12-14 amps of charge, approx 13.8-13.9 volts at battery with meter. rpm increase doesn't move a whole lot.
* Turn lights on, amp meter drops to about 3-4 amps, volts drop very little.
* check AC current coming from stator, shows 49.8 volts which is good per manual.
Here's where it get exciting,... I flip switch to turn on alternator, BAM, instant 14.5-14.8 volts at battery,
but amp meter from regulator drops to 0 like it shuts off. If I turn on lights or use winch with alternator on, amp meter drops to negative/dsicharge 10 amps
Ok so now I'm a little baffled and worried also.
*Is the alternator over coming the tractor's regulator and causing it to stop charging or even sending juice to stator?
*When amp meter drops to negative or discharge, am I send juice back through regulator?
*I'm also curious as to why it charges at 12-14 amps no load, then drops to 2-4 with load, I thought it would be the other way around.
I can leave alternator turned off for now, but thinking a long day of moving mulch or dirt and I will need the extra charging/voltage to keep it all running.
Thanks for any replies, just trying to wrap my brain arouind this before I burn up any more expensive NLA parts.